Altitude Of A Triangle

Properties	Types / Classification	Perimeter of Equilateral Triangle	Median of Triangle	Interior of a Triangle
Exterior of a Triangle	Altitude of a Triangle	Interior Angles of Triangle	Exterior Angles of Triangle	Interior Opposite Angles of Triangle
Adjacent Interior Angle of Triangle	Congruent Triangles	Area of Triangle	Area of Triangle by Heron's Formula	Construction of Triangle (compass)

An Altitude is a line segment: Whose one end is at vertex of a triangle Whose other end is on the opposite side of aforementioned vertex Which is perpendicular to this opposite side Example: In the following Triangle ABC: AD is a line segment: Whose one end is at vertex 'A' of a triangle Whose other end 'D' is on the opposite side 'BC' of vertex 'A' Which is perpendicular to the opposite side 'BC' Hence, AD is an altitude of Triangle ABC.